Use Reference Triangles and Unit Circle to Write the Given $\tan \left( \sec ^ { - 1 } ( x ) \right)$

Multiple Choice

Use reference triangles and unit circle to write the given trigonometric composition as an algebraic function: $\tan \left( \sec ^ { - 1 } ( x ) \right)$

A) $\frac { 1 } { \sqrt { 1 - x ^ { 2 } } }$
B) $\sqrt { 1 - x ^ { 2 } }$
C) $\sqrt { x ^ { 2 } - 1 }$
D) $\frac { 1 } { \sqrt { x ^ { 2 } - 1 } }$